Patents Represented by Attorney, Agent or Law Firm Westman, Champlin & Kellly, P.A.
  • Filter calibration method in a disc drive and apparatus
    Patent number: 6327108
    Abstract: A method and apparatus detects and filters pulse asymmetries in a read signal of a data storage device. A value indicative of the difference between the shape of a pulse from its first zero crossing to its peak and the shape of the pulse from its second zero crossing to its peak is determined. This value is minimized by adjusting at least one filter characteristic of a read signal filter.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: December 4, 2001
    Assignee: Seagate Technology LLC
    Inventors: Timothy F. Ellis, Alexei H. Sacks